COMPUTER HARDWARE
INPUT DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A keyboard works by:
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Rotating a stationary ball to adjust the pointer on a screen
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Tracking the movement of a laser or LED light across a flat surface
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Pressing keys down to generate different binary inputs
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Turning analogue sound vibrations into electrical signals
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Explanation:
Detailed explanation-1: -When you press a key, it presses a switch, completing the circuit and allowing a tiny amount of current to flow through. The mechanical action of the switch causes some vibration, called bounce, which the processor filters out.
Detailed explanation-2: -A computer keyboard is considered an input device because it only sends data to a computer and does not receive any information from it. As you type on the keyboard, you’re inputting information into the computer.
There is 1 question to complete.